/Engine/Source/Runtime/Engine/Classes/Curves/NameCurve.h
Add a new key to the curve with the supplied Time and Value. Returns the handle of the new key.
[FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) AddKey ( float InTime, const [FName](API\Runtime\Core\UObject\FName) & InValue, [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) KeyHandle )